@testset "8.string-to-integer-atoi.jl" begin
    @test my_atoi("   -42") == -42
    @test my_atoi("") == 0
    @test my_atoi("4193 with words") == 4193
    @test my_atoi("words and 987") == 0
    @test my_atoi("-91283472332") == -2147483648
    @test my_atoi("+-0123") == 0
    @test my_atoi("91283472332") == typemax(Int32)
end
